From: Nicolas Dufresne nicolas.dufresne@collabora.com
commit 3a99c4474112f49a5459933d8758614002ca0ddc upstream.
Quite often, the HW get stuck in error condition if a stream error was detected. As documented, the HW should stop immediately and self reset. There is likely a problem or a miss-understanding of the self reset mechanism, as unless we make a long pause, the next command will then report an error even if there is no error in it.
Disabling error detection fixes the issue, and let the decoder continue after an error. This patch is safe for backport into older kernels.
Fixes: cd33c830448b ("media: rkvdec: Add the rkvdec driver") Signed-off-by: Nicolas Dufresne nicolas.dufresne@collabora.com Reviewed-by: Brian Norris briannorris@chromium.org Tested-by: Brian Norris briannorris@chromium.org Reviewed-by: Ezequiel Garcia ezequiel@vanguardiasur.com.ar Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/staging/media/rkvdec/rkvdec-h264.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/staging/media/rkvdec/rkvdec-h264.c +++ b/drivers/staging/media/rkvdec/rkvdec-h264.c @@ -1124,8 +1124,8 @@ static int rkvdec_h264_run(struct rkvdec
schedule_delayed_work(&rkvdec->watchdog_work, msecs_to_jiffies(2000));
- writel(0xffffffff, rkvdec->regs + RKVDEC_REG_STRMD_ERR_EN); - writel(0xffffffff, rkvdec->regs + RKVDEC_REG_H264_ERR_E); + writel(0, rkvdec->regs + RKVDEC_REG_STRMD_ERR_EN); + writel(0, rkvdec->regs + RKVDEC_REG_H264_ERR_E); writel(1, rkvdec->regs + RKVDEC_REG_PREF_LUMA_CACHE_COMMAND); writel(1, rkvdec->regs + RKVDEC_REG_PREF_CHR_CACHE_COMMAND);